Vineyard Managers Deploy AI to Shield Grapes From Extreme Heat

As heat waves become more frequent across wine regions, vineyard managers are turning to sensors, drones, robots and artificial intelligence to limit damage to grapes and protect workers, according to specialists gathered this week at the Vi-TIC trade fair near Bordeaux.

The event, held Tuesday at Château Luchey-Halde in Graves, brought together about 50 companies focused on vineyard technology. The discussion centered on a pressing question for growers: whether digital tools can help vineyards adapt to extreme heat that is reshaping harvest calendars, reducing yields and changing grape composition.

Nathalie Toulon, an engineer in the Digital Agriculture Department at Bordeaux Sciences and part of the DigiLab testing platform for vine and wine technologies, said heat spikes are already pushing vines through their growth stages earlier than usual. At Château Luchey-Halde, she said, the vineyard is running nearly a month ahead, with harvest expected in early August.

That shift matters because very high temperatures can burn berries and alter fruit quality before picking begins. Toulon said heat can lower acidity, raise alcohol levels and change aromatic profiles. For wineries, those changes can affect both style and balance in the finished wine, making climate adaptation a direct issue for the beverage sector as producers try to preserve quality and consistency from one vintage to the next.

One of the main responses has been a wider use of field data. Weather stations are already common in vineyards, but growers are now deploying them in denser networks and placing them not only at the edge of plots but also inside the canopy and at different heights along the vine. That gives a more precise picture of conditions where grapes are actually developing.

At Vi-TIC, the company Cap 2020 presented low-cost weather stations offered on a rental basis, a model aimed at making broader coverage more affordable. The idea is to build networks across an estate or even an entire territory so growers can receive more localized alerts during heat events.

Those alerts can then guide daily decisions. Toulon said better forecasting allows managers to organize crews around the hottest hours, reduce unnecessary trips through the vineyard and improve worker comfort during dangerous conditions. In regions where labor shortages already weigh on growers, that kind of planning could become increasingly important during summer peaks.

Technology firms are also offering physical protection systems designed for rapid deployment when temperatures surge. Toulon pointed to products such as Viti-Tunnel from Mo.Del and La Canopée from Biénésis, which create temporary shade while still allowing air to circulate. The goal is to reduce overheating without sealing off the vines.

Water stress is another focus. In some vineyards, digital tools are being used to monitor moisture conditions and guide irrigation where it is allowed. Toulon noted that some appellations in her area do not irrigate, but she said repeated extreme events could eventually lead to temporary authorizations, including in places where irrigation has traditionally been restricted. She also said robotic systems could one day trigger watering for replacement vines at the right place and time.

Robots may also take on more field work as heat makes manual labor harder. Toulon said current machines are used mainly for soil work and are beginning to handle tasks such as shoot thinning and trimming. They can also help workers carry loads. Over time, she said, they may play a larger role during harvest as well.

Drones are being used mainly to collect information rather than intervene directly. Thermal imaging can help identify hot spots in vineyards and produce maps of water stress. That data can then feed decision-making tools or longer-term planning about how different parcels respond under pressure.

Artificial intelligence is becoming more visible across these systems because it can combine large volumes of data from different sources, including sensors, images and weather models. Toulon described AI as powerful but not magical. She said embedded imaging offers promise for tracking vine vigor, managing replanted vines and monitoring disease pressure, while modeling tools can support improved weather forecasting.

Some companies are going further by building digital twins of vineyards. Toulon cited Vineview, another exhibitor at Vi-TIC, which reconstructs parcels vine by vine so growers can simulate different practices more easily. But she cautioned that these systems need robust databases built over time because no two vintages unfold in exactly the same way.

Cost remains one of the biggest barriers to adoption. Toulon said many growers say they do not equip themselves because they cannot afford it. AI-based tools and web platforms often require servers, maintenance contracts and annual subscriptions on top of initial purchases. In some cases, multiple services mean multiple subscriptions.

Still, she argued that vineyard technology does not have to mean expensive high-end systems. Simpler tools such as low-cost sensors, basic decision-support software and traceability platforms can also help growers capture information and act on it more effectively. For producers willing to invest time upfront, she said, building their own dashboards from sensor readings or manually entered data can improve oversight of vineyard practices.

The broader challenge is that technology alone will not solve climate change or fully shield vineyards from repeated heat waves. But as harvests move earlier and grape chemistry shifts faster under extreme temperatures, many growers appear to see digital tools as one of the few practical ways to respond in real time while trying to protect both crop value and wine quality.